Rolls
Step 1:
Aerodactyl used Struggle! -3EN
Crit (30, d240): 79(No)
(5+(8-5)) = 8 DMG
Aerodactyl hurt itself in confusion! -4HP
Aerodactyl took some recoil! -9HP
Spinda used Ice Punch! -4EN
Crit (10, d240): 183 (No)
Eff (24, d240): 188 (No)
(8+(5-5))*1.5 = 12 DMG

Spinda munched on it's leftovers! +6HP
Step 2:
Aerodactyl used Struggle! -3EN
Crit (30, d240): 173 (No)
(5+(8-5)) = 8 DMG
Aerodactyl hurt itself in confusion! -4HP
Aerodactyl took some recoil! -9HP
Spinda used Ice Punch! -4EN
Crit (10, d240): 14 (No)
Eff (24, d240): 230 (No)
(8+(5-5))*1.5 = 12 DMG

Spinda munched on it's leftovers! +2HP
Step 3:
Aerodactyl used Crunch! -3EN
Crit (30, d240): 198 (No)
(8+4+(8-5)) = 15 DMG
Aerodactyl hurt itself in confusion! -8HP
Spinda used Counter! -5EN
15*1.5 = 23 DMG

Spinda munched on it's leftovers! +2HP
Round Summary

HP: -8+6-8+2-15+2 = -21

EN: -4-4-5 = -13

HP: -4-9-12-4-9-12-8-23 = -81

EN: -3-3-3 = -9